I honestly can't really get this game. The physics are really, really weird. You kinda get used to them, but they seem very different from pretty much every other platformer game. Some levels are fine and teach you the mechanics well enough, some are just pure pain. Especially the starting one, where your momentum gets murdered by a hitting a ceiling slope.
Also in terms of tutorials - the camera is very, very weird and the text is barely readable. Camera movement gets you very close to being dizzy, but doesn't cross that threshold, so that's a plus.
I think a more gradual tutorial, one mechanic at a time, would do wonders - because right now the levels seem kinda out of order (the order of switching levels with directional keys, I haven't completed too many). Also the 45 degree angled slopes do not help with understanding the physics.